OK, cracked it. Firstly, it seems Windows Office 2016 64 bit isn't compatable with Windows 10?
So if you buy a copy, make sure you get the choice of both 32 and 64 bit versions. I assume this is still the case?
That has actually nothing to do with my problem, I have the 32 bit Office. If you go in to the control panel and find the mail section (it says Outlook in brackets) click on that and you can easily find the original add an email account screen. It worked straight away. I hope this will help anyone having trouble with the Office 365 type auto add email box. Just have to add a few more apps and away we go, well sort of, I dislike 10 immensley, so I will be using this 7 rig for every day use.